package collection;

import java.util.ArrayList;
import java.util.List;

public class ListDemo1 {
    public static void main(String[] args) {
        List<String> list = new ArrayList<>();
        list.add("one");
        list.add("two");
        list.add("three");
        list.add("four");
        list.add("five");
        list.add("one");
        System.out.println("list:" + list);

        String e = list.get(3);
        System.out.println(e);

        for (String string : list) {
            System.out.println(string);
        }

        System.out.println(list.size());

        String e2 = list.set(2, "seven");
        System.out.println(e2);
        System.out.println(list);
    }
}
